Improvement in paper-bag machines



2 3 Snets-She et1. 0. H. MALTBY & G. W. MARTIN.

Paper-Bag Machine.

Patented Feb. 11, I879.

I Irnwzfar, W W244,

NVPErERS PHOTO LTHOGRAPHER WASHINGTON a c 3 Sheets-Sheet 2, G. H. MALTBY& G. W. MARTIN.

Paper-Bag Machine.

No. 212,245. Patented Feb. 11,1879

JIM/026501" ER, WASHNGTON, D C.

N. PEI'ERS. PHOTO LITNOGRAFK 3 Sheets-Sheet 3. O. H. MALTBYKvG. W.MARTIN.

Paper-Bag Machine.

Patented Feb.1 1, 1879;

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UNITED-STATES PATENT OFFICE.

oLrNToN H. MALTBY AND GEORGE W. MARTIN, or DAYTON, ASSIGNORS or ONE-HALFTHEIR RIGHT TO ROBERT E. JOHNSTON, OF MIDDLETOWN,

OHIO.

IMPROVEMENT IN PAPER-BAG MACHINES.

Specification forming part of Letters Patent No. 212,245, dated February11, 1879; application filed June 14,1878.

To all whom it may concern:

Be it known that we, CLINTON H. MALTBY- and GEORGE W. MARTIN, of Dayton,Ohio, have invented a new and useful Improvement in Machines for MakingPaper Bags, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, and tothe letters of reference marked thereon.

Figure 1 represents a front-side elevation of our machine. Fig. 2represents a plan or top view of the same. Fig. 3 representsa verticalsection taken at line a: of Fig. 2. Fig. 4 represents the bag-former andits connections. Fig. 5 represents a front view of one of the guides forthe bottom of the bag. Fig.6 represents a portion of the same, with theproj ecting corners of the bag-bottom and the inner face of thepaste-box.

The object of our invention is to form paper bags, known assatchel-bottom bags, from rectangular sheets of paper by machinery; andconsists in certain devices and their combinations by which the variousoperations for forming the body and the bottoms of the bag areperformed, as hereinafter described.

The frame of the machine consists of three pairs of posts, suitablyconnected by ties and beams, as represented in the drawings. Within theframe two endless rails or ways, B, are secured around the fourcross-beams R R, and form the track upon which the endless carrier X,consisting of links a, pivot-rods b, and trucks 6, travel. One or bothends of the several pivot-rods b may be furnished with trucks 0 andplates or formers d, as shown in detached Fig. 4. The main shaft 0 issupported in bearings secured to the frame-ties 2 and 4, and carries acrank-arm, D, on its inner end, which terminates at the centrallongitudinal plane of the endless carrier X.

To the crank-arm D the dog-hook H is pivoted, and the latter is alsopivoted with the slot int-he pendent swinging bar I, by which means thereciprocating movement of doghook H is governed, and made to cause theendless carrier X to travel upon the endless track with a regularintermittent movement. The outer end of shaft 0 is provided with abevel-gear, that meshes into a corresponding bevel-gear on verticalshaft 0, having a bevelgear meshing with its counterpart upon lineshaftJ, secured in bearings upon the front of the frame. Line-shaft J isfurnished with cams 5, 6, and 7, and with bevel-gear K, which mesheswith 'its corresponding gear L upon the counter-shaft M, across the endof the machine. Shaft M is furnished with cams S and 9.

To the under side of the cross-pieces N N the rectangular plate or beam0 is secured, and furnished with supports a a for the shank b ofreciprocating forceps 1 the jaws of which are hinged, and retained bysprings X.

Two projecting arms, d d, attached to the frame and beam 0, are providedwith pins, which project through slots made in the flat metal links S,pivoted respectively to the jaws of forceps 1 as represented in Fig. 1.

The springs X and links S serve to govern the operations of the forcepswhile the bag bottom is being formed.

Upon the cross-ties R, under and parallel with plate 0, the guide-plateE is secured; and between the two latter there is an open slot or way,of sufficient width to permit the former d to pass with the bag upon it.

The bracket S, projecting from plate 0, secures the guide T in front ofthe openin or slot between parts 0 E.

There is a narrow space between guide T and the front of plates 0 E,sufficient for the partly-formed bag-bottom to pass along as it iscarried upon former d.

Guide T has a horizontal tongue, n, with wedge-shaped point or end atits right hand termination, curved at its inner corner, and isbifurcated at its opposite end, forming flattened prongs m m. There aretwo guides, t 25, (shown in dotted lines in Fig. 3,) formed with beveledcurves upon their inner surfaces, which serve to turn successively thetwo projecting carriers of the bottom of the bag over the respectiveprongs m m of guide T during the progress of the bag through the slotsbetween the parts 0, E, and T, and behind the guides t t.

While the body of the bag is carried upon former d between plates 0 E,the projecting end thereof is acted upon -by the forceps P, guide T, andguides or folders t t, to make the bottom.

Cam 5 operates lever 5, having its fulcrumpin in arm 5", its upper endbeing connected by pivoted link 5 to the arm 5 of the pressing-bl0ck 5which maybe made hollow, to be heatedby steam through pipe y.

Cam 6 operates lever 6 fulcrumed at 6 its upper end being connected by apivoted link to the paste box 6 which is provided with two V-shapedopenings, having lips, as shown in detached Fig. 6, through which pasteis forced by its own gravity.

The relation of the V-shaped paster-lips to the guide T and to the twounfolded corners of the bottom of the bag (denoted by letters a a) isshown in Fig.6, the paster-box 6 being reversed in position to show thelips.

Cam 7 is provided with a groove, in which a pin projecting from lever 11works to actuate the reciprocating table V, to which it is connected bya pivoted link, V, under it. Table V is supported upon two arms, 6 a,running in ways Z Z; and a portion of the front frametimbers, 2, is cutaway for the table, as seen in Fig. l.

A stationary table, Z, occupies a position between arms e 0, and belowthe plane of recipro catin'g table V.

Cam 8 operates the reciprocating forceps P by means of lever 9. (Shownin Fig. 1.)

Cam 9 actuates lever h, connected by linkz' to the reciprocatingfolding-plate i, suitably supported in ways; and cam 10 actuates thecorresponding folding-plate j through forked lever j, which is hinged tosaid plate j, as seen in Fig. 3.

The former d has attached to its shank a disk with four radiating arms,0, which, by contact with studs 0 upon the side of track B, turn formerd, with its axle-pivot b, (as the endless carrier travels,) into properpositions to receive the paper as it is fed from tables V and Z, andthat it may enter edgewise with the bag (in tubular form) between theplates 0 E. The several levers which are not worked by grooved cams arethrown back by retractingsprings, as shown at r 1.

Each end of the several pivot-rods b may be provided with a truck, 0,radiating arms 0, and former d; and the machine may be furnished withseveral series of the devices described for forming the bag, so that twoor more bags can be completed at the same time.

It will be apparent from the foregoing description that during a partialrevolution of shaft 0 the operation of dog-hook H, acting upon apivot-rod, 1), moves the carrier X equal to the distance between thepivot-rods b, and that the carrier then rests, and the several cams uponshafts C, J, and M actuate the bag-forming devices during the remainingpart of the revolution of said shaft. During the latter half of therevolution of shaft 0, crank D will, by the aid of slotted pendant I,throw the dog H rearward to again grasp the next succeeding pivot-rod,ready to more the carrier in like manner; and these operations arecontinually repeated with regular intermissions, as hereinafterspecified.

Before one of the formers d rises to the horizontal position, as shownin Figs. 1, 2,

and 3, the paper-feeding table will have moved forward a paper blank fora bag on table Z, which blank will have had paste applied to it near itsedge. ward by forceps, to be attached to the machine for the purpose.When former d rises to said position the blank will be carried upwardupon it; and while the former rests in the position as shown, the blankupon it will occupy the position shown in dotted lines in Fig. 3, andfolder j will be thrust under the former, forcing the left-hand edge orportion of the blank under, which has the paste upon its outer surface,and then folder i, from the other side, will thrust the right hand(vertical portion) of the blank under the former d, 9

also causing it to lap upon the pasted edge that had been forced underby folder j, thus forming a tube around the former d, with its outwardopen end projecting beyond the outer creased end of the former.

At this stage of the work the carrier X moves forward another degree inits progress, when the next former of the series to be used re ceivesits blank in like manner, the preceding former cl, with its paper tube,being meantime at rest at the point 14. The third movement of carrier Xwill bring former d, with its tube or partially-formed bag, to theposition indicated by 15; and while arriving at said position thewedge-shaped end a of guide T will force inward one side of theprojecting open end of the paper tube, and while at rest the closed jawsof forceps P will be thrustfon ward and strike the opposite side of theprojecting end of the bag and fold it also inward. Then the jaws of theforceps will he suddenly opened by the aid of slotted links S, there byspreading out the upper and lower portions of the projecting end of thebag against the fronts of plates 0 and E, respectively. As the forcepsl? are thrust forward, after forcing inwardly the side of the end of thetube, with their inner rounded corners, the jaws will meet the end ofwedge n, which will enter the gap at their outer corner, between them,partially opening them before links S begin to act upon them.

The next stage or movement of carrier X will cause the former d, as itpasses with its bag between plates 0 E, to convey the bagbottom behindguide T, with its upper and lower corners projecting, as seen in Fig. 6;and while the carrier X rests in its course again with the former d inrange with paster-box 6 the cam 6 will actuate its lever and move thepaster inwardly, causing its V-shaped opening and lips to deposit pasteupon the two corners u a of the bag-bottom, which project respectivelyabove and below the guide T.

The blank may be drawn for- The next movement of carrierX and former dpasses the bag-bottom opposite to drier 5 and in its passage the beveledcurve upon the inner face of guide t will cause the upper projectingcorner of the bag-bottom to be folded downward over prong m, Fig. 5, ofthe guide T; and the paste deposited upon it will cause it to adhere tothe center of the bag-bottom,

which is exposed between pron gs m m of guide T, and in like manner, asthe bag is carried forward, guide or folder it will fold the lowerprojecting corner of the bottom upward and against the bottom of thebag, thus completin g the work of folding the pasted parts.

While the former d rests in range with the pressing-block or drier 5 thelatter is thrust forward by its. lever and cam, and made to press anddry the finished bagbottom.

The bag being completed, the next movement will carry the former d, withthe bag upon it, to the position indicated by 17, when they rest for theremoval of the bag, which will be done by a suitable mechanism, to bedescribed in a subsequent application for Letters Patent; and in saidapplication the mechanism for feeding the paper from a roll to themachine will also be described.

When as many formers d as there are pivotrods 1) are used, each of theseveral necessary operations to complete a bag will be performed duringeach revolution of shaft 0.

Opposite to the point indicated by 15, and set in recesses formed infaces of plates 0 E, we shall employ two clamping-pieces, of wood ormetal, with springs to hold them against the papertube on the former (1.These springpieces will have their faces flush with the fronts and theinner corners of plates 0 E, respectively. Their right-hand ends will bechamfered to admit the former d between them. The object of thesespring-pieces or jaws will be to hold the paper tube on former (1 sothat wedge n and forceps 1? shall fold the bottom accurately. Thismechanism will be more fully described in the specification of oursubsequent application.

The paper maybe cut into rectangular sheets of the proper size for thebag, and, being placed on table V one sheet at a time, may be fedforward onto table Z, where it will be pushed forward by table V. But wepropose, instead of the tables V Z, to usea mechanism for feeding thepaper from aroll, and this mechanism for feeding the paper from a rollembraces a pasting apparatus, feeding clamps or frames, and shears to beoperated by the same powerwhich drives the bag-machine.

'As before intimated, the mechanism represented in Fig. 4 will beemployed instead of the friction-rolls 18, where they appear as mereguides on track B.

We claim as our invention- 1. The pivoted intermittently revolvingformer (1, operating substantially as and for the purpose hereinspecified.

2. The former d and arms 0, in combination with carrier X, ways B, andstuds 0, as and for the purpose specified.

3. The former d and carrier of a paper-bag machine, in combination withplates 0 and E, and guides T, t, and t, substantially as and for thepurpose specified.

4. In a paper-bag machine, the reciprocating forceps P, in combinationwith former d and guide T, substantially as and for the purposedescribed.

5. In a paper-bag-machine, the reciprocating paster 6 in combinationwith bifurcated guide T, substantially as and for the purpose specified.

In testimony hereof we have hereunto sub- 4 scribed our names this 18thday of May, A. D.

CLINTON H. MALTBY. GEORGE W. MARTIN. Witnesses:

WILLIAM B. Innnves, DANIEL W. IDDINGS.

